Roller bearing
Theoretical information on roller bearings
Palmgren A. Ball and roller bearing engineering //Philadelphia: SKF Industries Inc. – 1959. – Т. 1.
where:
z is the number of rolling elements;
L is the roller length, m;
P is the radial load, N;
α is the contact angle, deg.
Ball bearing
Theoretical information on ball bearings
Gargiulo E. P. A simple way to estimate bearing stiffness //Machine Design. – 1980. – Т. 52. – №. 17. – С. 107-110.
where:
z is the number of rolling elements;
D is the ball diameter, m;
P is the radial load, N;
α is the contact angle, deg.